[CI][DRMTIP] Frequent link training failures on fi-icl-u4 cause sporadic modeset failures in random CI tests

Submitted by LAKSHMINARAYANA VUDUM @l4kshmi

Assigned to Intel GFX Bugs mailing list

Link to original bug (#111185)

Description

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_328/fi-icl-u4/igt@kms_cursor_crc@pipe-c-cursor-128x128-rapid-movement.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_326/fi-icl-u4/igt@kms_atomic_transition@plane-all-modeset-transition-fencing.html

Starting subtest: plane-all-modeset-transition-fencing
(kms_atomic_transition:2256) igt_kms-CRITICAL: Test assertion failure function igt_display_commit_atomic, file ../lib/igt_kms.c:3547:
(kms_atomic_transition:2256) igt_kms-CRITICAL: Failed assertion: ret == 0
(kms_atomic_transition:2256) igt_kms-CRITICAL: Last errno: 22, Invalid argument
(kms_atomic_transition:2256) igt_kms-CRITICAL: error: -22 != 0
Subtest plane-all-modeset-transition-fencing failed.